Rename executables to `hls` and `hls-wrapper`

[fendor]

Mainly because I think that cabal install exe:haskell-language-server hurts my wrist 😄
Opinions?

[jneira]

Well, i liked it when we discussed the project name: #29 so 👍

[alanz]

Mainly because I think that cabal install exe:haskell-language-server hurts my wrist

I have a small helper script to do that. And there is a great big one,

./cabal-hls-install hls-8.6.5

[jneira]

@fendor do you think we could close this one?

[fendor]

I suppose it is too late to rename the executables without some serious overhead. Closing as wontfix